For sale: KitchenAid kettle in beige. Brand new, never used. The box is slightly dented, otherwise everything is intact. Selling because it's not needed.
Never pay down a deposit in a bank account until you have met the seller, seen signed a purchase agreement.
No serious private advertisers ask for a down payment before you meet.
Receiving an email with an in-scanned ID does not mean that you have identified the sender. You do this on the spot, when you sign a purchase agreement.
